EP2083534A1 - Übertragung von Multicast- und Broadcast-Inhalt und Verfahren dafür - Google Patents

Übertragung von Multicast- und Broadcast-Inhalt und Verfahren dafür Download PDF

Info

Publication number
EP2083534A1
EP2083534A1 EP08290066A EP08290066A EP2083534A1 EP 2083534 A1 EP2083534 A1 EP 2083534A1 EP 08290066 A EP08290066 A EP 08290066A EP 08290066 A EP08290066 A EP 08290066A EP 2083534 A1 EP2083534 A1 EP 2083534A1
Authority
EP
European Patent Office
Prior art keywords
multicast
broadcast
packet
server
protocol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08290066A
Other languages
English (en)
French (fr)
Inventor
Conte Alberto
Germaneau Alexis
Carine Balageas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent SAS
Original Assignee
Alcatel Lucent SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel Lucent SAS filed Critical Alcatel Lucent SAS
Priority to EP08290066A priority Critical patent/EP2083534A1/de
Priority to US12/864,468 priority patent/US20110038297A1/en
Priority to PCT/EP2009/050861 priority patent/WO2009092820A1/en
Publication of EP2083534A1 publication Critical patent/EP2083534A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/16—Multipoint routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/48—Routing tree calculation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1836—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with heterogeneous network architecture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2212/00—Encapsulation of packets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5069—Address allocation for group communication, multicast communication or broadcast communication

Definitions

  • the invention relates to the transmission of multicast and broadcast content in a mobile access network, and more particularly without limitation to a method of transmitting multicast and broadcast content, and to a multicast and broadcast server.
  • a connection between a terminal and a network element of a wireless communication network is generally established via an air interface.
  • the air interface can for example be compliant with the IEEE 802.16 standard as a part of a protocol.
  • the functions of a protocol can be divided into a series of layers in accordance with the open systems interconnection reference model (OSI model), starting on the air interface layer up to the application layer.
  • OSI model open systems interconnection reference model
  • the network layer is responsible for end to end packet delivery and provides with the functional means for transferring data sequences from a source to a destination, using one or more networks while maintaining a quality of service.
  • the network layer performs network routing functions.
  • the best-known protocol of this layer is the Internet Protocol (IP)
  • the unicast mode that sends information packets to a single destination, setting up independent connections and copying the information from end-to-end to every user that requires it.
  • the extreme opposite is the broadcasting mode, which uses the network capabilities to send information to all destinations without congesting the network capacity, using either broadcast channels or different routing methods.
  • a more controlled approach is reached using the multicast mode, as it transports the packets to a group of destinations simultaneously, delivering the message over each link of the network only once and creating copies only when the links to the destinations split. All mentioned methods use in general a single transmitter to send the information to one or more users.
  • One of the disadvantages of this type of connections in standards as IEEE 802.16 is that there is no established way of transmission of multicast-broadcast content from a content server to several base stations, leading to a congestion of the network or to a waste of network resources.
  • the present invention provides a method of transmitting multicast and broadcast content in a mobile access network, the mobile access network comprising: at least one multicast-broadcast service zone with at least one Base Station, a Multicast-Broadcast (MBS) server for each one of the multicast-broadcast service (MBS) zones, the mobile access network coupled to a content distribution network, the content distribution network comprising a content server coupled to an IP multicast network, the content server being adapted for multicast and broadcast transmission, the method comprising the steps of: sending a first join request using a membership protocol for a multicast group from a Multicast-Broadcast server to the content distribution network; creating a local multicast group for the multicast-broadcast service zone by sending a second join request using the membership protocol from the base station of the multicast-broadcast service zone to the multicast-broadcast server; and sending a first multicast IP packet from the multicast/broadcast content server to the multicast-broadcast server through the IP multicast network using a first multicast
  • the method further comprises: encapsulating the first multicast IP packet into a second multicast IP packet by the multicast-broadcast server; sending the second multicast IP packet to the local multicast group of the multicast-broadcast service zone using a second multicast routing protocol and receiving the second multicast IP packet by each base station of the local multicast group.
  • the MBS server is the source of traffic of the local multicast group for each MBS zone that is connected to.
  • an MBS server sends a multicast packet with the local multicast group as the destination, all the bases stations that have joined the group will receive the multicast packet.
  • the multicast routing protocol that is used for the local multicast group may be different to the multicast routing protocol used for the content distribution network.
  • the mobile access network may belong to a different technology and a different operator from that of the content distribution network, so that the embodiment allows increasing the compatibility between the networks, without congesting the networks or the bandwidth.
  • the role of the MBS server is to function as a destination of the multicast content sent by the content server and as a source of the local multicast groups.
  • the base station within an MBS zone may join the local multicast group by sending a join request to the MBS server.
  • the MBS server functions as a source of more than one local multicast group.
  • the MBS server may be coupled to more than one MBS zone and the base station may join more than one MBS zone.
  • the membership protocol is Internet Group Management Protocol.
  • the local multicast group is defined by assigning a local multicast group address and the second multicast IP packet further comprises a local multicast group address.
  • the use of the local multicast groups allows using a destination address that will reach all base station subscribed to the local multicast group, without duplicating each multicast IP packet for each base station.
  • the local multicast group is created by assigning a specific local multicast group address to the local multicast group, that is known to the MBS server and to the base stations. The base station use the local multicast group address to join the local multicast group.
  • the multicast routing protocol can be one of the following: Protocol Independent Multicast-Sparse Mode or Distance Vector Multicast Routing Protocol or Multicast Open Shortest Path First or Protocol Independent Multicast-Dense Mode or Protocol Independent Multicast-Source Specific Multicast.
  • Other multicast protocols including non standard protocols, may be used as well.
  • the method in accordance with the invention is particularly advantageous as by allowing the used of different multicast routing protocols for both networks: the mobile access network and the content distribution network.
  • the content server send the first multicast packet over the content distribution network using a multicast routing protocol and the MBS Server receives the first multicast packet and encapsulates it and sends it over the mobile access network using another multicast routing protocol.
  • the same multicast routing protocol may be used for both networks as well.
  • the first join request further comprises a multicast group destination address and the second join request further comprises a local multicast group address.
  • the invention in another aspect, relates to a computer program product stored on a computer usable medium, comprising computer readable program means for causing a computer to perform a method according to any of the embodiments of the invention when the program is run on the computer.
  • the invention in another aspect relates to a Multicast-Broadcast server in a mobile access network for transmitting multicast and broadcast content to a multicast-broadcast service zone, the mobile access network further comprising: at least one multicast-broadcast service zone with at least one Base Station, the mobile access network coupled to a content distribution network, the content distribution network comprising a multicast/broadcast content server coupled to an IP multicast network, the Multicast-Broadcast server comprising: means for sending a first join request using a membership protocol for a multicast group from a Multicast-Broadcast server to the content distribution network; means for receiving a second join request using the membership protocol for creating a local multicast group from the Base Station of the multicast-broadcast service zone; and means for receiving a multicast IP packet from the multicast/broadcast content server to the multicast-broadcast server through the IP multicast network using a first multicast routing protocol.
  • the method further comprises: means for encapsulating the first multicast IP packet into a second multicast IP packet by the multicast-broadcast server and means for sending the second multicast IP packet to the local multicast group of the multicast-broadcast service zone using a second multicast routing protocol.
  • the membership protocol is Internet Group Management Protocol.
  • the multicast routing protocol is Protocol Independent Multicast-Sparse Mode or Distance Vector Multicast Routing Protocol.
  • the first join request further comprises a multicast group destination address and the second join request further comprises a local multicast group address.
  • the second multicast IP packet further comprises a local multicast group address.
  • Fig. 1 shows a block diagram 100 of a transmission of a multicast and broadcast content from a content distribution network 101 to a mobile access network 102.
  • the content distribution network 101 further comprises an IP multicast distribution tree 103 and a multicast/broadcast content server 111.
  • the mobile access network 102 further comprises a multicast-broadcast (MBS) server A 104, an MBS server B 105, an MBS zone A 106, an MBS zone B 107, a first base station 108, a second base station 109, a third base station 110 and a plurality of base stations 111 located within the MBS zone B 107.
  • MBS multicast-broadcast
  • a multicast and broadcast server for example the MBS server A 104
  • the MBS server requires first sending a join request using a membership protocol, as the internet group management protocol (IGMP), for joining a multicast group to the content distribution network.
  • IGMP internet group management protocol
  • the multicast group is related to the content that the MBS server wants to transmit to the MBS zone that it is coupled to.
  • the MBS server requires sending a join request for every multicast group that it want to access, that is for each multimedia content, as e.g. TV channels or videos, that it wants to forward to the plurality of base stations within the MBS zone.
  • each one of the base stations that form an MBS zone as for example the base stations 108-110 within the MBS zone A 106, sends a second join request to the MBS server A 104 in order to create a local multicast group, using the same membership protocol that the MBS server has used previously.
  • the local multicast group allows the plurality of base stations within an MBS zone to receive the content taking advantage of a multicast transmission, saving resources and bandwidth within the mobile access network.
  • the multicast/broadcast content server 111 sends the first multicast IP packet corresponding to the multicast group the MBS server has previously accessed to the multicast group.
  • the multicast IP packet is sent through the IP multicast distribution tree 103 using a first multicast routing protocol, as e.g. the Protocol Independent Multicast-Sparse Mode or the Distance Vector Multicast Routing Protocol.
  • a first multicast routing protocol as e.g. the Protocol Independent Multicast-Sparse Mode or the Distance Vector Multicast Routing Protocol.
  • the MBS server encapsulates the packet into a second multicast IP packet and uses as a destination address the address of the local multicast group corresponding to the MBS zone that the MBS server is coupled to.
  • the MBS server sends the second multicast IP packet and each base station that has joined the local multicast group will receive it.
  • the creation of local multicast groups and the location of the MBS servers at the entrance or the connection of the mobile access network 102 with the content distribution network 101 allows a flexible transmission of multicast and broadcast content, as the multicast IP packet within the content distribution network 101 can be sent using a first multicast routing, whereas in the mobile access network 102, the encapsulated multicast IP packet may use a second or a different multicast routing protocol as the one used on the content distribution network 101. This allows both taking advantage of the multicast capabilities of the networks and allowing the possibility of coupling networks with different technologies.
  • the MBS server may be able to manage and have access to more than one MBS Zone.
  • Fig. 2 shows a block diagram of an encapsulated multicast IP packet 200 comprising a first multicast IP packet 201 and a second encapsulated multicast IP packet 202.
  • the first multicast IP packet 201 corresponds to the packet that is sent by the multicast/broadcast content server 111 and further comprises the multicast/broadcast content 203 and the destination IP address 204.
  • the encapsulated multicast IP packet further comprises the station IP address 205.
  • the multicast/broadcast content 203 may correspond for example to a video stream of a TV channel, as for example CNN; the destination IP address 204 of the first multicast IP packet 201 corresponds to the address of the MBS server that has requested access to the multicast group of the MBS content 203.
  • the destination address of the encapsulated multicast IP packet 202 corresponds to the address of the local multicast IP packet that has been created by the plurality of base stations of a specific MBS zone.
  • Fig. 3 shows a mobile access network 106 that further comprises the MBS server 104 and the plurality of base stations 303-307.
  • the MBS server 104 receives a first multicast IP packet 301
  • the packet is encapsulated into a second multicast IP packet 302 with the destination address of the local multicast group.
  • the packet is sent through the mobile access network 106, all the base stations that have joined the local multicast group will receive the multicast IP packet.
  • the local multicast distribution tunnels allow taking advantage of a multicast transmission, so that the MBS server requires sending only one packet to the network, and there is no need that the MBS server duplicates the packet for each base station.
  • the local multicast distribution tunnel is created and creates copies only when the links to the destinations split.
  • Fig. 4 shows a block diagram of the network elements that form a multicast and broadcast transmission 400.
  • the block diagram 400 comprises a content server 401, an MBS server 402 and an MBS zone 403.
  • the MBS zone 403 further comprises the base stations 404-406.
  • the MBS server 402 further comprises the means for sending the first join request 407, the means for receiving a second join request 408, the means for receiving first a multicast IP packet 409, the means for encapsulating the first multicast IP packet 410 and the means for sending the encapsulated multicast IP packet 411.
  • the MBS server 402 uses a membership protocol for joining a multicast group of the content server.
  • the means for receiving the second joint request 408 is used for creating a local multicast group for all the base stations within a multicast broadcast service zone.
  • a multicast IP packet is sent to the station address of the local multicast group, all the base stations receive the same multicast IP packet.
  • the transmission uses a first multicast routing protocol.
  • the means for sending 411 send the second multicast IP packet using as address the address of the local multicast group.
  • the transmission of the second multicast IP packet uses a second multicast routing protocol and it reaches all the base stations that have previously joined the local multicast group.
  • Block diagram 101 Content distribution network 102
  • Mobile access network 103 IP multicast tree 104
  • MBS server A 105
  • MBS server B 106
  • MBS zone A 107
  • MBS zone B 108
  • Second base station 110 Third base station 111
  • Plurality of base station 200 Block diagram 201 First multicast packet 202
  • Second multicast packet 203
  • MBS content 204
  • MBS server address 205
  • Block diagram 301 First multicast packet
  • Encapsulated multicast packet 303
  • Base station 304 Base station 305
  • Base station 307 400
  • Block diagram 401 Content server 402 MBS server 403 MBS zone 404
  • Base station 406 Base station 407 Means for sending 408 Means for receiving 409 Means for receiving 410

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
EP08290066A 2008-01-25 2008-01-25 Übertragung von Multicast- und Broadcast-Inhalt und Verfahren dafür Withdrawn EP2083534A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08290066A EP2083534A1 (de) 2008-01-25 2008-01-25 Übertragung von Multicast- und Broadcast-Inhalt und Verfahren dafür
US12/864,468 US20110038297A1 (en) 2008-01-25 2009-01-26 Transmission of multicast and broadcast content and method thereof
PCT/EP2009/050861 WO2009092820A1 (en) 2008-01-25 2009-01-26 Transmission of multicast and broadcast content and method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08290066A EP2083534A1 (de) 2008-01-25 2008-01-25 Übertragung von Multicast- und Broadcast-Inhalt und Verfahren dafür

Publications (1)

Publication Number Publication Date
EP2083534A1 true EP2083534A1 (de) 2009-07-29

Family

ID=39493600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08290066A Withdrawn EP2083534A1 (de) 2008-01-25 2008-01-25 Übertragung von Multicast- und Broadcast-Inhalt und Verfahren dafür

Country Status (3)

Country Link
US (1) US20110038297A1 (de)
EP (1) EP2083534A1 (de)
WO (1) WO2009092820A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011082640A1 (zh) * 2010-01-08 2011-07-14 中兴通讯股份有限公司 多播广播业务区域复用及资源指示的方法和系统
CN105075187A (zh) * 2013-04-19 2015-11-18 三菱电机株式会社 网关装置、包含网关装置的网络系统、空调室外机以及空调网络系统
EP3579502A4 (de) * 2017-02-24 2019-12-18 Huawei Technologies Co. Ltd. Verfahren und vorrichtung für die zuteilung von externen multicast-ip-adressen
WO2022012247A1 (zh) * 2020-07-17 2022-01-20 腾讯科技（深圳）有限公司 多播广播业务的通信方法、装置、介质及电子设备

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101808277A (zh) * 2009-02-13 2010-08-18 三星电子株式会社 多播广播服务中的智能辅助传输方法
US20120066396A1 (en) * 2010-09-10 2012-03-15 Samsung Electronics Co. Ltd. Apparatus and method for supporting periodic multicast transmission in machine to machine communication system
CN103797729B (zh) * 2011-09-09 2016-10-26 Lg电子株式会社 接收多播服务的方法和采用该方法的终端
US20190068305A1 (en) * 2017-08-31 2019-02-28 Uniband Electronic Corp. Broadcasting communication system, broadcasting relay device and broadcasting relay method
CN110868353B (zh) * 2018-08-28 2022-02-08 杭州海康威视数字技术股份有限公司 一种报文处理方法及装置
CN111866755B (zh) * 2020-07-17 2023-03-28 腾讯科技（深圳）有限公司 多播广播业务的通信方法、装置、介质及电子设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003051002A1 (en) * 2001-12-12 2003-06-19 Ktfreetel Co., Ltd. Method and apparatus for tunneling service of explicit multicast in mobile ip network
US20050063409A1 (en) * 2003-09-18 2005-03-24 Nokia Corporation Method and apparatus for managing multicast delivery to mobile devices involving a plurality of different networks
EP1871044A2 (de) * 2001-10-03 2007-12-26 QUALCOMM Incorporated Verfahren und Vorrichtung zur Datenübertragung in einem drahtlosen Kommunikationssystem mit einem internen Protokoll

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050185630A1 (en) * 2002-11-07 2005-08-25 Nobuhisa Aoki Mobile communication system
US7995576B2 (en) * 2006-07-31 2011-08-09 Cisco Technology, Inc. Method and system for reducing latency in a multi-channel multicast streaming environment in content-delivery networks
US20080056219A1 (en) * 2006-08-29 2008-03-06 Muthaiah Venkatachalam Broadband wireless access network and methods for joining multicast broadcast service sessions within multicast broadcast service zones

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1871044A2 (de) * 2001-10-03 2007-12-26 QUALCOMM Incorporated Verfahren und Vorrichtung zur Datenübertragung in einem drahtlosen Kommunikationssystem mit einem internen Protokoll
WO2003051002A1 (en) * 2001-12-12 2003-06-19 Ktfreetel Co., Ltd. Method and apparatus for tunneling service of explicit multicast in mobile ip network
US20050063409A1 (en) * 2003-09-18 2005-03-24 Nokia Corporation Method and apparatus for managing multicast delivery to mobile devices involving a plurality of different networks

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CHENNIKARA J ET AL: "Application-Layer Multicast for Mobile Users in Diverse Networks", GLOBECOM'02. 2002 - IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE. CONFERENCE PROCEEDINGS. TAIPEI, TAIWAN, NOV. 17 - 21, 2002; [IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE], NEW YORK, NY : IEEE, US, 17 November 2002 (2002-11-17), pages 1713 - 1718, XP002237999, ISBN: 978-0-7803-7632-8 *
CHIYA ET AL: "An IPv6/IPv4 Multicast Translator based on IGMP/MLD Proxying (mtp) <draft-tsuchiya-mtp-01.txt>; draft-tsuchiya-mtp-01.txt", TANDARD-WORKING-DRAFT, INTERNET ENGINEERING TASK FORCE, IETF, CH, no. 1, 19 February 2003 (2003-02-19), XP015005559, ISSN: 0000-0004 *
JON CROWCROFT: "Multicast Address Translation; draft-crowcroft-mat-00.txt", IETF STANDARD-WORKING-DRAFT, INTERNET ENGINEERING TASK FORCE, IETF, CH, 1 November 2001 (2001-11-01), XP015012084, ISSN: 0000-0004 *
JUN-HONG CUI ET AL: "A protocol to improve the state scalability of source specific multicast", GLOBECOM'02. 2002 - IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE. CONFERENCE PROCEEDINGS. TAIPEI, TAIWAN, NOV. 17 - 21, 2002; [IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE], NEW YORK, NY : IEEE, US, vol. 2, 17 November 2002 (2002-11-17), pages 1899 - 1904, XP010636473, ISBN: 978-0-7803-7632-8 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011082640A1 (zh) * 2010-01-08 2011-07-14 中兴通讯股份有限公司 多播广播业务区域复用及资源指示的方法和系统
CN105075187A (zh) * 2013-04-19 2015-11-18 三菱电机株式会社 网关装置、包含网关装置的网络系统、空调室外机以及空调网络系统
EP2988457A4 (de) * 2013-04-19 2017-01-11 Mitsubishi Electric Corporation Gatewayvorrichtung, netzwerksystem mit der gatewayvorrichtung, klimatisierungsausseneinheit und klimaanlagennetzwerksystem
EP3579502A4 (de) * 2017-02-24 2019-12-18 Huawei Technologies Co. Ltd. Verfahren und vorrichtung für die zuteilung von externen multicast-ip-adressen
WO2022012247A1 (zh) * 2020-07-17 2022-01-20 腾讯科技（深圳）有限公司 多播广播业务的通信方法、装置、介质及电子设备

Also Published As

Publication number Publication date
WO2009092820A1 (en) 2009-07-30
US20110038297A1 (en) 2011-02-17

Similar Documents

Publication Publication Date Title
EP2083534A1 (de) Übertragung von Multicast- und Broadcast-Inhalt und Verfahren dafür
US7710961B2 (en) System and method for sending packets over a computer network
JP3942033B2 (ja) ポイントツーポイントパケット交換向きのネットワークにおけるマルチキャスト方法
US6252862B1 (en) Method and apparatus for routing packet data in a communications system
US8189584B2 (en) Multicast traffic management in a network interface
EP2248300B1 (de) Ablieferung von multicast-daten
JP3266188B2 (ja) マルチキャスト通信装置及びマルチキャスト通信方法
US8411680B2 (en) IP multicasting system and a method based on the mobile network
EP1298836A1 (de) Verfahren und Vorrichtung zur IP-Mehrfachsendung über einen Rundfunkkanal
CN101291240B (zh) 一种组播流传输方法和系统
CN1135689A (zh) 互连局域网的方法和装置
EP3613172B1 (de) Verfahren zur verbesserten handhabung von multicast-datenströmen in einem breitbandzugangsnetzwerk eines telekommunikationsnetzwerks, telekommunikationsnetzwerk und system zur verbesserten handhabung von multicast-datenströmen in einem breitbandzugangsnetzwerk eines telekommunikationsnetzwerks, programm und computerprogrammprodukt
CN101010907A (zh) 组播或广播服务的确定性反馈控制
WO2008044971A1 (en) Efficient mbms backbone distribution using one tunnel approach
US20100135297A1 (en) Unicast streaming of multicast content
JP4712095B2 (ja) 通信方法および無線通信システム
CN101009669B (zh) 一种传输组播消息的方法和系统以及路由设备
KR100956817B1 (ko) 패킷 데이터를 처리하는 방법 및 이를 위한 장치
CN110115011B (zh) 组播业务处理方法及接入设备
WO2008154796A1 (fr) Procédé et équipement permettant de commander la transmission de paquets de données de multidiffusion dans la station de base et la passerelle du système wimax
EP2164203A1 (de) Nachricht, übertragungsverfahren, vorrichtung und system zur implementierung von multicast-diensten
GB2398207A (en) Multicast group management in packet radio networks
KR100965053B1 (ko) 제한적 멀티캐스트 기반의 인터넷 방송 데이터 전송 방법
KR100420667B1 (ko) 무선 이동 통신망에서 멀티캐스트 구현을 위한 아이지엠피메시지 처리 방법 및 장치
Zhou et al. Study of LMDS Videoconferencing System

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

AKX Designation fees paid
17P Request for examination filed

Effective date: 20100519

RBV Designated contracting states (corrected)

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20101007

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALCATEL LUCENT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

111Z Information provided on other rights and legal means of execution

Free format text: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Effective date: 20130410

INTG Intention to grant announced

Effective date: 20130910

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140121